What is the CVSS score of CVE-2025-51451?

CVE-2025-51451 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Ex1200t Firmware are affected by CVE-2025-51451?

Organizations using by sending a specific request face critical risk from CVE-2025-51451, a improper authentication vulnerability rated CVSS 9.8.

How to fix or mitigate CVE-2025-51451?

Within 7 days: Identify all affected systems running by sending a specific request and apply vendor patches promptly. Audit authentication configurations and rotate any potentially compromised credentials.

Ex1200t Firmware CVE-2025-51451

CRITICAL

Improper Authentication (CWE-287)

2025-08-13 cve@mitre.org

Authentication Bypass Ex1200t Firmware TOTOLINK

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:06 vuln.today

CVE Published

Aug 13, 2025 - 17:15 nvd

CRITICAL 9.8

DescriptionNVD

In TOTOLINK EX1200T firmware 4.1.2cu.5215, an attacker can bypass login by sending a specific request through formLoginAuth.htm.

AnalysisAI

In TOTOLINK EX1200T firmware 4.1.2cu.5215, an attacker can bypass login by sending a specific request through formLoginAuth.htm. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. In TOTOLINK EX1200T firmware 4.1.2cu.5215, an attacker can bypass login by sending a specific request through formLoginAuth.htm. Affected products include: Totolink Ex1200T Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.